The correct answer is option D.
STRs are found only in non-coding regions is not true.
STRs (short tandem repeats) are distributed throughout the genome. STRs are found in coding and non-coding regions. STRs are typically repeated many times in the DNA. They are used for DNA profiling thus allowing criminal identification through a database search. Mutations of STR in the non-coding region is inconsequential, however, mutation of STR in the coding region leads to phenotypic changes.
